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Root Rot

Healthy avocado roots play an important role in producing consistent high-quality avocado crops from healthy avocado trees. Roots provide nutrients and water for strong healthy leaves, good shoot growth, flowering and fruit set, and avocado fruit growth.

Since no definitive measures have yet been found to control the disease, an integrated approach to managing the root rot disease has been found to be most effective. This approach includes root rot prevention, avocado grove cultural management practices and chemical treatment.

Phytophthora cinnamomi, the causal agent of avocado phytophthora root rot, attacks the feeder roots, which can result in death of the avocado tree. Although the disease has been studied for more than 60 years, definitive control measures have not been found and losses continue to mount.

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